Instant purchase is okay. Elementary 6th Grade Math Theme Materials, Volumes 1-4 - Title: Elementary 6th Grade Math Theme Materials (Answers and explanations are included in the latter half of the textbook.) - Volumes: Volumes 1-4 - Numbers: No. 1 to No. 36 - Answer Sheets: Hama Note Answer Sheets - Target Grade: 6th Grade There are a few places with writing, folds, and tears. Please check the photos. If you can agree to the above, please consider purchasing. Even if you are in the middle of exchanging comments, the person who purchases first will take priority, so please understand.